xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:s="clr-namespace:System;assembly=mscorlib">
ScaleX="{Binding Source={StaticResource dt}, Path=Tag.Second}" />
Storyboard.TargetProperty="Angle"
From="0" To="360" Duration="0:1:0"
IsAdditive="True"
RepeatBehavior="Forever" />